2.3.2. GHDL and GTKWave

Try these first

1. 1.

   What does GHDL stand for?

   Hint

   Think about VHDL.

2. 2.

   What is GTKWave used for?

   Hint

   What do you see from a simulation?

3. 3.

   What is GHDL?

   • A hardware description language
   • An open-source simulator for digital designs
   • A type of waveform viewer

   Hint

   Consider GHDL's primary function.

4. 4.

   GTKWave is used to:

   • True: Visualize simulation results
   • False: Create circuit designs

   Hint

   Think about what you see after a simulation.

5. 5.

   You have designed a VHDL code for a digital multiplexer. Write a testbench for it, simulate it using GHDL, and analyze the output using GTKWave. What were the discrepancies between expected and simulated outputs?

   Hint

   Focus on the control signals of the multiplexer.

6. 6.

   Modify your VHDL design for a digital circuit to include a clock signal. Use GHDL to simulate the updated code and visualize the changes in signal behavior using GTKWave. What changes do you observe?

   Hint

   Pay close attention to timing adjustments in your waveform graphs.